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clk: renesas: rzg2l: Add multi clock PM support 

Add multi clock PM support for cpg driver.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://lore.kernel.org/r/20210626081344.5783-2-biju.das.jz@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
This commit is contained in:
Biju Das 2021-06-26 09:13:35 +01:00 committed by Geert Uytterhoeven
parent e73f0f0ee7
commit 2fa9fd69b3
1 changed files with 28 additions and 21 deletions
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49
drivers/clk/renesas/renesas-rzg2l-cpg.c
View File

@ -594,42 +594,49 @@ static int rzg2l_cpg_attach_dev(struct generic_pm_domain *unused, struct device
{
struct device_node *np = dev->of_node;
struct of_phandle_args clkspec;
bool once = true;
struct clk *clk;
int error;
int i = 0;
while (!of_parse_phandle_with_args(np, "clocks", "#clock-cells", i,
&clkspec)) {
if (rzg2l_cpg_is_pm_clk(&clkspec))
goto found;
if (rzg2l_cpg_is_pm_clk(&clkspec)) {
if (once) {
once = false;
error = pm_clk_create(dev);
if (error) {
of_node_put(clkspec.np);
goto err;
}
}
clk = of_clk_get_from_provider(&clkspec);
of_node_put(clkspec.np);
if (IS_ERR(clk)) {
error = PTR_ERR(clk);
goto fail_destroy;
}
of_node_put(clkspec.np);
error = pm_clk_add_clk(dev, clk);
if (error) {
dev_err(dev, "pm_clk_add_clk failed %d\n",
error);
goto fail_put;
}
} else {
of_node_put(clkspec.np);
}
i++;
}
return 0;
found:
clk = of_clk_get_from_provider(&clkspec);
of_node_put(clkspec.np);
if (IS_ERR(clk))
return PTR_ERR(clk);
error = pm_clk_create(dev);
if (error)
goto fail_put;
error = pm_clk_add_clk(dev, clk);
if (error)
goto fail_destroy;
return 0;
fail_put:
clk_put(clk);
fail_destroy:
pm_clk_destroy(dev);
fail_put:
clk_put(clk);
err:
return error;
}